Hi,
two or three times ok, but five times seems to be a little bit to often. If this egg-eating doesn't stop, the most common cause is that something is wrong in the tank. There are a lot of possibilities like to much pressure from other fishes (wrong dither fishes or the male), eggs are not fertilized and/or get white, wrong water parameters, not enough food (normally, even if the Apistogrammas are extremely hungry, they don't eat their own eggs). We have a better chance to possibly find out what causes this behaviour in this case.
Kind regards
Marc